Drag-saw



(No Model.)V

J. RUSSELL, Jr.

DRAG SAW. No. 267,721. PatenEdNoV. 21, 1882.

N. PLTEns, Phan-Lnmwaphm wnlmgton. D. (L

' trating their construction.

outline diagrams ot' the different parts of the` UNITED STATES PATENTOFFICE.

JOHN RUSSELL, JR., OF ROSEMOUNT, vMINNSOTA.

`DRAG-SAW.

SPECIFICATION forming part of Letters Patent No. 267,721, dated November21, 1882.

Application tiled June 1882. (No model.)

To all lwhom it may concern: t

Be it known that l, JOHN RUSSELL, Jr., a citizen oi' the United States,residing at Rosemount, in the county ot' Dakota and State of Minnesota,have invented certain new and useful Improvements in Sawing Machines, ofwhich the following is a specification.

This invention relates to machines for saw-1 ing logs into properlengths for timber, shingles, tire-wood, &c., after the trees have beenfelled and it consists in the construction and arrangement otparts, ashereinafter shown'and specilically claimed.

ln the drawings, Figure 1 is a perspective View ofthe machine complete.Fig. 2 is a plan 1 view, and Fig.43 is a side view of theradjustingmechanism otl the combined log-holding brace and guide detached. Fig. lis a plan view detached oi' the treadles. Figs. 5, 6, 7, and 8 areenlarged detached detail views of the lever-couplings andchain-segments, illus- Figs. 9 and 10 are machine, showing theirrelative positions at two parts of the stroke ot' the saw.

t A is a base piece or plate, having a scat, B, at one end and pivotedat the other end at a in two straps, O O2. These` straps curve npwardand backward at c, and run back parallel with the base A, andare bentdownward each side of the base and connected to a standard,

l), by bolts or other suitable fastenin gs.

E is a foot or brace having a lateral slot, d, through one end andspurs? e in the lower end, and with the upper end resting between thecurved portions `c of the straps O' O2, as shown.

g' is a bolt passing through the strap O O2, and also through the slotd, so that the brace E may be moved endwise the length ot' the slot andstill be held between the straps. By tightening up the bolt g the bracemay be pinched between the straps and prevented from being moved fromside to side.

Upon top ot' the brace E, between the curved parts c, an inclined plate,F, having teeth h, is bolted, said teeth adapted to engage witha bolt,g2, passing through the straps G C2 at the upper part of the curvedportions c, as shown in Figs. 1, 2, and 3. By this means the rela# tiveangles between the brace E and base A and standard D may be altered toany extent by loosening the bolts y g2, and setting the teeth It upwardor downward over the bolt g2, and then tightening the bolts again toprevent side play.

The spurs e are intended to be set into the log Gr, which is beingsawed, and by the adjustability ofthe brace E the straps O C2 andstandard D' may be retained in the same position no matter how large orsmall the log may be, as hereinafter more fully shown.

H is the main saw-operating lever, passing down through a slot, K, inthe base A, and prol vided with a handle, t" ,in the upperend, andpivotcd to the sawIat thelower end. The handle t is made adjustablehigher or lower by the holes ft2-to adapt it to the person operating thesaw. Upon either side ot'this lever H, near its center, two plates, LL2,are bolted, having hubs m 'm2 upon their sides, through which a shaft,M, passes and is keyed fast therein. Projectin g from the front of theseplates, about opposite the shaft M, are two ears, L3 L4, having a seriesof holes, n, between which the upper end of a connecting-rod, N, is heldby a bolt, n2, while the lower end is held by a bolt, n3, in the slot Kof the base A.

PP2 are two collars, loose upon the shaft M, just outside the hubs m m2of the plates L L2,

and provided with downwardly-projecting earsV P3 P4, to which the strapsC G2 are bolted, as

shown more clearly in Figs. 5, 6, and 7, by which arrangement the leverH is pivoted to the straps C' G2.

Outside the collars P' P2 and straps C O2, upon the ends of the shatt M,are keyed two segmental grooved sheaves,R R2, having hooks t t2,adaptedto receive the' ends of chains R3 lt4, which pass over saidsegmental sheaves and down to two foot levers or treadles, T' T2,

to which they are secured by hooks u' u2. The i able along the base Afor the same purpose,

IOO

e l A 267.721

i and still another adjustment may be obtained by means of the holes nin the ears L3 L4. By these several adjustments the machine may beperfectly adapted tothe size of the operator and to his weight.

The brace E has a slit, c, in its lower part, in which the saw I runs,the brace thus serving the triple purpose of a brace for the log beingacted upon, a foot or support for the frame of the saw operatingmechanism, and a guide for the saw.

In using the saw the operator mounts the seat B with one foot upon eachof the stirrups T5 T6, and grasps the handles fi', (the brace E and sawI having iirst been .properly adjusted and set.) Hc then pulls the leverH toward him, and atthe same time presses downward with his feet uponthe treadles T T2. This action throwsthe saw I forward, and by means ofthe chains R3 R4 and segments R R2 the shaft M is revolved and the leverH assisted in its work. By these movements the operator lifts himself upfrom the seat B, so that the raising of the base A by the rod N, whichwill occur when the lever H is drawn backward, will not be counteractedby the weight of the operator, and then, when the lever H is pushedbackward at the returnstroke ofthe saw, the weight of the operator willassist the action by pulling down upon the ears L3 L4 through the rod'Nand revolving the shaft backward in the collars P P2. Durin g thereturn-stroke of course the feet of the operator must not press upon thetreadles T T2.

rlhe relative positions of the parts are shown by the outline diagramsof Figs. aand 10, Fig. 9 showing the position when the forward stroke isabout one-third completed, and Fig.

10 showing the position at the completion of 4o the forward stroke. Thesaw may thus be made to travel very close to the ground when the cuttingis completed, no matter what size the log may be, as-the lower end ofthe lever H may be kept at the same distance from the ground at thelowest point ofits stroke by adjustin g the brace E.

What I claim as-new isl. 4The standard D, straps C C2, having thesaw-operatingleverH, pivoted therein, and provided With curved Aends cand bolts g g2, in combination with the brace l E, having the vtoothedplate F, slot d, and slit c, and spurs e,

